diff --git a/src/dialog_colorpicker.cpp b/src/dialog_colorpicker.cpp
index a98d8d7e4..3430c48bd 100644
--- a/src/dialog_colorpicker.cpp
+++ b/src/dialog_colorpicker.cpp
@@ -381,6 +381,10 @@ class ColorPickerScreenDropper final : public wxControl {
 	void DropFromScreenXY(int x, int y);
 };
 
+#ifndef MAC_OS_VERSION_15_0
+#define MAC_OS_VERSION_15_0 150000
+#endif
+
 void ColorPickerScreenDropper::DropFromScreenXY(int x, int y) {
 	wxMemoryDC capdc(capture);
 	capdc.SetPen(*wxTRANSPARENT_PEN);